Caroline uses 20N of force to move a box of books 15m. How much work did she do?

If you punch a punching bag hard, has work been done?

Finding the ratio of a machine's output force/input force gives you the machine\'s

By oiling the gears on her bike, Rebecca decreases the friction between moving parts and therefore increases the

If an inclined plane had a length of 20m and a height of 5m, what would the mechanical advantage be?

The number of times a machine multiplies your effort force is called -

In science, a push or a pull is called a

Daniel and Ryan both work at a car wash. It takes Daniel 20 minutes to wash a car and Ryan 10 min. Ryan has

The movement of an object is the result of

It took Bradley 45s and 60N of force to move a sofa 5m into a moving truck. How much power did he exert?

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